[gimp/gimp-2-10] app: in GimpDashboard, improve legend logic

[Ell <ell src gnome org>]

commit 3097978f4e03b4bfdb3a49f3fce51fb98dc2fa9c
Author: Ell <ell_se yahoo com>
Date:   Sat May 11 05:09:45 2019 -0400

    app: in GimpDashboard, improve legend logic
    
    (cherry picked from commit 088827e5630d3dc5187bdbfceb4ee62eda238357)

 app/widgets/gimpdashboard.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/app/widgets/gimpdashboard.c b/app/widgets/gimpdashboard.c
index 0d63386fbe..e11d76b39c 100644
--- a/app/widgets/gimpdashboard.c
+++ b/app/widgets/gimpdashboard.c
@@ -2789,7 +2789,7 @@ gimp_dashboard_update_group (GimpDashboard *dashboard,
               n_rows++;
             }
 
-          if (group_info->has_meter && variable_info->color.a)
+          if (group_info->has_meter && field_info->meter_value)
             {
               color_area = gimp_color_area_new (&variable_info->color,
                                                 GIMP_COLOR_AREA_FLAT, 0);